package com.cn.wanxi.servlet.user;

import com.alibaba.fastjson.JSONObject;
import com.cn.wanxi.model.UserModel;
import com.cn.wanxi.service.IUserService;
import com.cn.wanxi.service.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/back/user/findById")
public class UserFindByIdServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        /*

        1.乱码
        2.取值
        3.封装
        4.调用service
        5.得到返回结果
        6.将返回结果返回页面（封装到json）
         */

        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        String idString = req.getParameter("id");//null  ""
//        idString = idString == null || idString.equals("") ? "0" : idString;
        Integer id = 0;
        try {
            id = Integer.parseInt(idString);
        } catch (Exception e) {

        }


        IUserService iUserService = new UserServiceImpl();
        UserModel userModel = iUserService.findById(id);
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("model", userModel);
        resp.getWriter().println(jsonObject);
    }
}
